scholarly journals Influence of the land use on the water quality in the So Joo and Iguau Rivers, state of Paran, Brazil: assessment of the importance of the riparian zone

2016 ◽  
Vol 11 (1) ◽  
pp. 48-56 ◽  
Author(s):  
Kehrwald Fruet Thomas ◽  
Gisele da Silva Pinto Fabiana ◽  
Moretto Yara ◽  
Dayane Weber La iacute s ◽  
Camila Scur Mayara ◽  
...  
Keyword(s):  
Water Quality ◽  
Land Use ◽  
Riparian Zone ◽  
Rivers State

Scale-dependence effects of landscape on seasonal water quality in Xitiaoxi catchment of Taihu Basin, China

2014 ◽  
Vol 71 (1) ◽  
pp. 59-66 ◽  
Author(s):  
Huihua Lv ◽  
Youpeng Xu ◽  
Longfei Han ◽  
Feng Zhou
Keyword(s):  
Water Quality ◽  
Land Use ◽  
Riparian Zone ◽  
Water Quality Management ◽  
Landscape Configuration ◽  
Stepwise Multiple Regression ◽  
Data Set ◽  
Minimum Width ◽  
Xitiaoxi Catchment ◽  
Landscape Attributes

Further understanding the mechanisms of landscape–water interactions is of great importance to water quality management in the Xitiaoxi catchment. Pearson's correlation analysis, stepwise multiple regression and redundancy analysis were adopted in this study to investigate the relation between water quality and landscape at the sub-catchment and 200 m riparian zone scales during dry and wet seasons. Landscape was characterized by natural environmental factors, land use patterns and four selected landscape configuration metrics. The obtained results indicated that land use categories of urban and forest were dominant landscape attributes, which influenced water quality. Natural environment and landscape configuration were overwhelmed due to land management activities and hydrologic conditions. In general, the landscape of the 200 m riparian zone appeared to have slightly greater influence on water than did the sub-catchment, and water quality was slightly better explained by all landscape attributes in the wet season than in the dry season. The results suggested that management efforts aimed at maintaining and restoring river water quality should currently focus on the protection of riparian zones and the development of an updated long-term continuous data set and higher resolution digital maps to discuss the minimum width of the riparian zone necessary to protect water quality.

Effects of land use and land cover on water quality of low-order streams in Southeastern Brazil: Watershed versus riparian zone

CATENA ◽  
2018 ◽  
Vol 167 ◽  
pp. 130-138 ◽  
Author(s):  
Kaline de Mello ◽  
Roberta Averna Valente ◽  
Timothy O. Randhir ◽  
André Cordeiro Alves dos Santos ◽  
Carlos Alberto Vettorazzi
Keyword(s):  
Water Quality ◽  
Land Use ◽  
Land Cover ◽  
Riparian Zone ◽  
Southeastern Brazil ◽  
Effects Of Land Use ◽  
Low Order

Effects of hydrology, riparian topography, and land uses on the water quality in the middle and down streams Han River, China

2020 ◽  
Author(s):  
Yi-Ming Kuo ◽  
Enmin Zhao
Keyword(s):  
Water Quality ◽  
Land Use ◽  
Surface Roughness ◽  
Riparian Zone ◽  
Riparian Zones ◽  
Forest Land ◽  
Wet Season ◽  
Riverine Water ◽  
Use Patterns ◽  
Han River

<p>Influence of lands use patterns on water quality is complex and scale dependent. The relationship among land use patterns/configurations, topography, and surface roughness of riparian zones and river water quality in the middle and down streams Han River, China, was analyzed using geographically weighted (GWR) multiple regression models. The land use types within 50 m and 100 m of riparian zones that exhibit the strongest association with riverine water quality were investigated. Water quality samplings were collected from 94 sites during November in 2015 (dry season) and May in 2016 (wet season) under the rainy days. GWR models have better predictions of PO<sub>4</sub><sup>3-</sup> and TP in the Wet season and those of NO<sub>3</sub>-N, TN, and Chl-a in the Dry season. High prediction differences of PO<sub>4</sub><sup>3-</sup> and TP between Dry and Wet seasons. Most water quality variables in 50 m riparian zone have higher local parameter estimate (LPE) values than those in 100 m riparian zone, indicating 50 m riparian zone significantly influences riverine water quality. In the middle section, grass lands represent the source area of pollutants, which may discharge pollutants with runoff into Han River. However, forest land with high vegetation height can retard the rainfall becoming surface runoff and its relevant high surface roughness can increase infiltration and reduce the nutrient transport ability. Therefore, forest land exhibited a stronger contribution to water quality improvements. These findings provide important information for sustainable landscape management of riparian zones to improve riverine water quality.</p>

Monitoring land use change in the Lake Taupo catchment between 1975, 1990 and 2002 using satellite remote sensing data

2007 ◽  
pp. 17-22
Author(s):  
H. Lilienthal ◽  
A. Brauer ◽  
K. Betteridge ◽  
E. Schnug
Keyword(s):  
Remote Sensing ◽  
Water Quality ◽  
Land Use ◽  
Land Use Change ◽  
Satellite Remote Sensing ◽  
Remote Sensing Data ◽  
Native Vegetation ◽  
Lake Water Quality ◽  
Livestock Farming ◽  
Slow Decline

Conversion of native vegetation into farmed grassland in the Lake Taupo catchment commenced in the late 1950s. The lake's iconic value is being threatened by the slow decline in lake water quality that has become apparent since the 1970s. Keywords: satellite remote sensing, nitrate leaching, land use change, livestock farming, land management

Pesticide Contamination of Groundwater in Virginia: BMP Impact Assessment

1993 ◽  
Vol 28 (3-5) ◽  
pp. 379-387 ◽  
Author(s):  
S. Mostaghimi ◽  
P. W. McClellan ◽  
R. A. Cooke
Keyword(s):  
Water Quality ◽  
Land Use ◽  
Best Management Practices ◽  
Water Samples ◽  
Management Practices ◽  
Water Quality Monitoring ◽  
Pesticide Contamination ◽  
Cropping Patterns ◽  
Creek Watershed ◽  
Surface And Groundwater

The Nomini Creek Watershed/Water Quality monitoring project was initiated in 1985, as part of the Chesapeake Bay Agreement of 1983, to quantify the impacts of agricultural best management practices (BMPs) on improving water quality. The watershed monitoring system was designed to provide a comprehensive assessment of the quality of surface and groundwater as influenced by changes in land use, agronomic, and cultural practices in the watershed over the duration of the project. The primary chemical characteristics monitored include both soluble and sediment-bound nutrients and pesticides in surface and groundwater. Water samples from 8 monitoring wells located in agricultural areas in the watershed were analyzed for 22 pesticides. A total of 20 pesticides have been detected in water samples collected. Atrazine is the most frequently detected pesticide. Detected concentrations of atrazine ranged from 0.03 - 25.56 ppb and occurred in about 26 percent of the samples. Other pesticides were detected at frequencies ranging from 1.6 to 14.2 percent of all samples collected and concentrations between 0.01 and 41.89 ppb. The observed concentrations and spatial distributions of pesticide contamination of groundwater are compared to land use and cropping patterns. Results indicate that BMPs are quite effective in reducing pesticide concentrations in groundwater.

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